/*
 * Copyright (C) 2009 Virgil Dobjanschi, Jeff Sharkey
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.googleio.util;

import android.content.AsyncQueryHandler;
import android.content.ContentResolver;
import android.database.Cursor;

import java.lang.ref.WeakReference;

public class NotifyingQueryHandler extends AsyncQueryHandler {
    private WeakReference<OnQueryComplete> mListener;

    public interface OnQueryComplete {
        public void onQueryComplete(int token, Object cookie, Cursor cursor);
    }

    public NotifyingQueryHandler(ContentResolver cr, OnQueryComplete listener) {
        super(cr);
        mListener = new WeakReference<OnQueryComplete>(listener);
    }

    protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
        OnQueryComplete listener = mListener.get();
        if (listener != null) {
            listener.onQueryComplete(token, cookie, cursor);
        } else {
            cursor.close();
        }
    }
}
